Mitsubishi Electric MSC-07RV-E2 Service Manual page 7

• The way of remodelling individual operation of P.C Board of remote controller has changed.
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be
modified according to the number of the indoor unit.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below :
The P.C. board has the print "J1" and "J2". Solder "J1" and "J2" according to the number of indoor unit as shown
in Table 1. After modification, press the RESET button.
Table 1
No. 1 unit
No. 2 unit
No. 3 unit
No. 4 unit
REMOTE CONTROLLER (How to set the type)
This remote controller setting needs to be switched according to the type of air conditioner (COOL & HEAT or COOL
ONLY).
If the setting is incorrect, the air conditioner does not operate normally. Therefore, check if the setting corresponds to
the type of air conditioner. If it does not, correct the setting as shown below.
1 unit operation
No modification
–
–
–
Slide switch
2 units operation
Same as at left
Solder J1
–
–
Type
COOL & HEAT
The position
of the slide
switch
7
NOTE : For remodelling, take out the bat-
teries and press the
OPERATE/STOP(ON/OFF)button
twice or 3 times at first.
After finish remodelling, put back
the batteries then press the
RESET button.
3 units operation
Same as at left
Same as at left
Solder J2
Solder both J1 and J2
–
COOL ONLY
4 units operation
Same as at left
Same as at left
Same as at left